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SEC. 91.1806.  PRESUMPTIVE LOAD BEARING VALUES OF SOILS.
   (Amended by Ord. No. 185,587, Eff. 7/16/18.)
 
   Section 1806 of the CBC is adopted by reference, except Section 1806.2 of the CBC is not adopted; and, in lieu, LAMC Subsection 91.1806.2 is added.
 
91.1806.2. Presumptive Load-bearing Values.  The load-bearing values used in design for supporting soils near the surface shall not exceed the values specified in CBC Table 1806.2 unless data to substantiate the use of higher values are submitted and approved.  Where the Department has reason to doubt the classification, strength or compressibility of the soil, the requirements of CBC Section 1803.5.2 shall be satisfied.
 
   Presumptive load-bearing values shall apply to materials with similar physical characteristics and dispositions.
 
   Mud, organic silt, organic clays, peat or uncertified fill shall not be assumed to have a presumptive load-bearing capacity.